Bridge conditions in Boone County, Kentucky
139 inventoried bridges · 8 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
8 of the 139 bridges the federal inventory lists in Boone County are rated poor; the rest split 57 good and 74 fair.
- 8 of the 139 bridges in Boone County, Kentucky, are rated in poor condition (5.8%) in the 2025 National Bridge Inventory, as of .
- 57 bridges (41.0%) are rated good and 74 (53.2%) fair.
- The median Boone County bridge was built in 1984.
- The busiest poor-rated bridge is I-275 over Ohio River (built 1976), carrying about 38,411 vehicles a day.
Good 41.0% · Fair 53.2% · Poor 5.8% of 139 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-275 over Ohio River | 1976 | 38,411 | Poor |
| Ky-842 over NS (cno&tp) System | 1982 | 9,286 | Poor |
| Cr-1001 over Gunpowder Creek | 1951 | 8,155 | Poor |
| Ky-14 over Mccoys Fork | 1931 | 2,146 | Poor |
| Ky-338 over Gum Branch | 1953 | 1,473 | Poor |
| Cr-1128 over Mccoys Fork | 1982 | 422 | Poor |
| Pebble Creek Way over Gunpowder Creek | 1999 | 121 | Poor |
| Garrison Creek Rd over Garrison Creek | 1980 | 75 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 over Ky 18 Ramp | 1990 | 140,378 | Fair |
| I-75 Ramp over West Rmp KY18 to I75SB | 1990 | 140,378 | Fair |
| I-75 over Chambers Lane | 1960 | 112,428 | Fair |
| I-75 Nc over Turfway Road (ky 1017) | 1960 | 90,720 | Fair |
| I-75 over Turfway Road (ky 1017) | 1960 | 90,720 | Fair |
| I-75 Nc over Ky 536 (mt Zion Rd) | 1992 | 70,784 | Fair |
| I-75 over Ky 536 (mt Zion Rd) | 1992 | 70,784 | Good |
| I-275 over Elijah Creek | 1971 | 61,346 | Fair |
| I-75 Nc over Ky 338 | 1993 | 60,475 | Good |
| I-75 over Ky 338 | 1993 | 60,475 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Kentucky: Kentucky bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.